Just spitballing here but I’m wondering if the data within each of these files is structurally similar regardless the extension? If so, perhaps one could simply change the extension to allow for import?
I’d see about opening each in notepad to compare and go from there.
I emailed Carvco to ask whether they could allow Carveco to import Vetric.tool files that Whiteside lists on their site for download, and Carveco stated that the Vetric file format was proprietary, and they have no plans to allow vectric.tool files to import into Carveco. I tried opening the Vetric.tool files, hoping it was just XML, but it’s not.